Where do I get conversion lug nuts?

[davidh]

I have some newer 3/4 ton wheels I want to put on a 67 3/4 ton but I cannot run the center caps with out newer style lug however new trucks are metric and are older ones are not so I cannot use newer lug nuts.. They need to have a large pattern for the black plastic lug covers to fit.

They must be out there because I see many trucks with newer style wheels. The guys at Napa here looked at me like I was from outer space or something. Thanks guys.